Positive
Negative
Zero
Input
Formatted Input
Formatted Input
Formatted
"Input" corresponds to hard-coded cells that do not automatically update when the model is changed
Input 0
2.345
2
-2.345
(2)
0
0
Input 0.0
2.67
2.7
-2.67
(2.7)
0
0.0
Input 0.00
2.578
Chapter 6: Relational Algebra
Exercise Solutions
Consider the LIBRARY relational schema shown in Figure 6.14 (on the next page), which is used to
keep track of books, borrowers, and book loans. Write down relational expressions for obtaining the
following
Consider the universal relation R = cfw_A, B, C, D, E, F, G, H, I and the set of
functional dependencies F = cfw_ cfw_A, B -> cfw_C, cfw_A -> cfw_D, E, cfw_B -> cfw_F, cfw_F -> cfw_G,
H, cfw_D
-> cfw_I, J . What is the key for R? Decompose R into 2NF, the
Zimbabwe is in a deep recession
The graph shows Zimbabwes aggregate expenditure curve
Then Zimbabwes new platinum mine starts production and its exports increase
Show the effect of the increase in exports on Zimbabwes aggregate expenditure curve Draw a po
Inflation= money growth- real gdp growth
Rearrange the formula money growth+velocity growth = Inflation rate+ real gdp growth to be:
Velocity growth= inflation rate + Real Gdp growth money growth
V= (P*Y)/m
Growth rate of nominal gdp = growth rate of real
BUAD 1020 chapter 5 definitions.
AC adapter: A power adapter that converts AC to DC, provides power to drive the system unit
components, and can recharge batteries.
All-in-one: A desktop computer that has the monitor and system unit housed together in the
BUAD 1020 chapter 9 definitions:
access: Relates to the responsibility of those who have data to control who is able to use that data.
accuracy: Relates to the responsibility of those who collect data to ensure that the data is correct.
antispyware: Progr